Question 46856
(f o g)^ -1 (3) 
is the same as (f(g(x)) reversed. ( the ^-1 represents the inverse (reversed) funcion, not 1/(f(g(x)))  ).
We can now say: 
{{{f(g(x))=3}}}
{{{f(2)=3}}} (from the table)
{{{g(x)=2}}}
So {{{x=5}}}.

I hope this helps,
Adam
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